Flexmojos can be used to generate manifest.xml.

$ mvn flexmojos:manifest

That will generate a manifest.xml on target directory containing all classes available on source paths.

In a more configurable way it can be include on pom.xml:

<project>
...
  <build>
    <plugins>
      <plugin>
        <groupId>org.sonatype.flexmojos</groupId>
        <artifactId>flexmojos-maven-plugin</artifactId>
        <executions>
          <execution>
            <goals>
              <goal>manifest</goal>
            </goals>
            <configuration>
              <manifestIncludes>
                <include>org/flexmojos/ui/*</include>
              </manifestIncludes>
              <manifestExcludes>
                <exclude>**/*.mxml</exclude>
              </manifestExcludes>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
...
</project>

This will generate the manifest containing all classes under org.flexmojos.ui package, but won't include any mxml.

A simple sample project can be found here.

manifest goal

Known Issues